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-rw-r--r--net/mac80211/util.c83
1 files changed, 54 insertions, 29 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 974ebe70f5b0..8428f4a95479 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -578,7 +578,7 @@ ieee80211_get_vif_queues(struct ieee80211_local *local,
void __ieee80211_flush_queues(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
- unsigned int queues)
+ unsigned int queues, bool drop)
{
if (!local->ops->flush)
return;
@@ -594,7 +594,7 @@ void __ieee80211_flush_queues(struct ieee80211_local *local,
IEEE80211_QUEUE_STOP_REASON_FLUSH,
false);
- drv_flush(local, sdata, queues, false);
+ drv_flush(local, sdata, queues, drop);
ieee80211_wake_queues_by_reason(&local->hw, queues,
IEEE80211_QUEUE_STOP_REASON_FLUSH,
@@ -602,9 +602,9 @@ void __ieee80211_flush_queues(struct ieee80211_local *local,
}
void ieee80211_flush_queues(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata)
+ struct ieee80211_sub_if_data *sdata, bool drop)
{
- __ieee80211_flush_queues(local, sdata, 0);
+ __ieee80211_flush_queues(local, sdata, 0, drop);
}
void ieee80211_stop_vif_queues(struct ieee80211_local *local,
@@ -744,16 +744,19 @@ EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
/*
* Nothing should have been stuffed into the workqueue during
- * the suspend->resume cycle. If this WARN is seen then there
- * is a bug with either the driver suspend or something in
- * mac80211 stuffing into the workqueue which we haven't yet
- * cleared during mac80211's suspend cycle.
+ * the suspend->resume cycle. Since we can't check each caller
+ * of this function if we are already quiescing / suspended,
+ * check here and don't WARN since this can actually happen when
+ * the rx path (for example) is racing against __ieee80211_suspend
+ * and suspending / quiescing was set after the rx path checked
+ * them.
*/
static bool ieee80211_can_queue_work(struct ieee80211_local *local)
{
- if (WARN(local->suspended && !local->resuming,
- "queueing ieee80211 work while going to suspend\n"))
+ if (local->quiescing || (local->suspended && !local->resuming)) {
+ pr_warn("queueing ieee80211 work while going to suspend\n");
return false;
+ }
return true;
}
@@ -1470,10 +1473,12 @@ static int ieee80211_build_preq_ies_band(struct ieee80211_local *local,
/* Check if any channel in this sband supports at least 80 MHz */
for (i = 0; i < sband->n_channels; i++) {
- if (!(sband->channels[i].flags & IEEE80211_CHAN_NO_80MHZ)) {
- have_80mhz = true;
- break;
- }
+ if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
+ IEEE80211_CHAN_NO_80MHZ))
+ continue;
+
+ have_80mhz = true;
+ break;
}
if (sband->vht_cap.vht_supported && have_80mhz) {
@@ -1735,6 +1740,10 @@ int ieee80211_reconfig(struct ieee80211_local *local)
struct cfg80211_sched_scan_request *sched_scan_req;
bool sched_scan_stopped = false;
+ /* nothing to do if HW shouldn't run */
+ if (!local->open_count)
+ goto wake_up;
+
#ifdef CONFIG_PM
if (local->suspended)
local->resuming = true;
@@ -1756,9 +1765,6 @@ int ieee80211_reconfig(struct ieee80211_local *local)
reconfig_due_to_wowlan = true;
}
#endif
- /* everything else happens only if HW was up & running */
- if (!local->open_count)
- goto wake_up;
/*
* Upon resume hardware can sometimes be goofy due to
@@ -2042,7 +2048,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
* If this is for hw restart things are still running.
* We may want to change that later, however.
*/
- if (!local->suspended || reconfig_due_to_wowlan)
+ if (local->open_count && (!local->suspended || reconfig_due_to_wowlan))
drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
if (!local->suspended)
@@ -2054,7 +2060,19 @@ int ieee80211_reconfig(struct ieee80211_local *local)
mb();
local->resuming = false;
- if (!reconfig_due_to_wowlan)
+ /* It's possible that we don't handle the scan completion in
+ * time during suspend, so if it's still marked as completed
+ * here, queue the work and flush it to clean things up.
+ * Instead of calling the worker function directly here, we
+ * really queue it to avoid potential races with other flows
+ * scheduling the same work.
+ */
+ if (test_bit(SCAN_COMPLETED, &local->scanning)) {
+ ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
+ flush_delayed_work(&local->scan_work);
+ }
+
+ if (local->open_count && !reconfig_due_to_wowlan)
drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
list_for_each_entry(sdata, &local->interfaces, list) {
@@ -2538,7 +2556,9 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
ri.mcs = status->rate_idx;
ri.flags |= RATE_INFO_FLAGS_MCS;
if (status->flag & RX_FLAG_40MHZ)
- ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
+ ri.bw = RATE_INFO_BW_40;
+ else
+ ri.bw = RATE_INFO_BW_20;
if (status->flag & RX_FLAG_SHORT_GI)
ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
} else if (status->flag & RX_FLAG_VHT) {
@@ -2546,13 +2566,13 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
ri.mcs = status->rate_idx;
ri.nss = status->vht_nss;
if (status->flag & RX_FLAG_40MHZ)
- ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
- if (status->vht_flag & RX_VHT_FLAG_80MHZ)
- ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
- if (status->vht_flag & RX_VHT_FLAG_80P80MHZ)
- ri.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
- if (status->vht_flag & RX_VHT_FLAG_160MHZ)
- ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
+ ri.bw = RATE_INFO_BW_40;
+ else if (status->vht_flag & RX_VHT_FLAG_80MHZ)
+ ri.bw = RATE_INFO_BW_80;
+ else if (status->vht_flag & RX_VHT_FLAG_160MHZ)
+ ri.bw = RATE_INFO_BW_160;
+ else
+ ri.bw = RATE_INFO_BW_20;
if (status->flag & RX_FLAG_SHORT_GI)
ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
} else {
@@ -2560,10 +2580,15 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
int shift = 0;
int bitrate;
- if (status->flag & RX_FLAG_10MHZ)
+ if (status->flag & RX_FLAG_10MHZ) {
shift = 1;
- if (status->flag & RX_FLAG_5MHZ)
+ ri.bw = RATE_INFO_BW_10;
+ } else if (status->flag & RX_FLAG_5MHZ) {
shift = 2;
+ ri.bw = RATE_INFO_BW_5;
+ } else {
+ ri.bw = RATE_INFO_BW_20;
+ }
sband = local->hw.wiphy->bands[status->band];
bitrate = sband->bitrates[status->rate_idx].bitrate;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.